I am looking for a solution to easily identify what version of Microsoft Outlook our clients our using, we are upgrading from Outlook 2000 to Outlook 2003 and before I can do that I need to know who is using what version. We did an upgrade a few months back but because it was done by an ex-employee I have no idea what machines were upgraded and which were not.

We have facilities all along the east coast and I thought maybe I could create a script that runs along with our exsiting logon script that I could somehow export to a text file?

tell me what you know about the network?
are all sites linked together?
Do you ahve admin access to all the machines?
what code base is your login script?
where the manually installed or do you use a software installer program like SMS/altiris/Zenworks?
I have several ways in mind depending on what you can/not do.